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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2024-03-04 20:00:11 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2024-03-05 16:28:06 +0100 |
| commit | 742e78976dd4799b029dbbab596376f42fb1ee91 (patch) | |
| tree | a431d8e833bffb5dd87ba8cd22104c685c2e67e7 /arch/arm/lib/pbl.lds.S | |
| parent | 3919cc4b29960aca0c0ec559d4f91cb33a5631c4 (diff) | |
| download | barebox-742e78976dd4799b029dbbab596376f42fb1ee91.tar.gz barebox-742e78976dd4799b029dbbab596376f42fb1ee91.tar.xz | |
ARM64: add optional EFI stub
While very recent binutils releases have dedicated efi-*-aarch targets,
we may want to support older toolchains. For this reason, we import
the kernel's EFI stub PE fakery, so the same barebox-dt-2nd.img may be
loaded as if it were a "normal" or an EFI-stubbed kernel.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20240304190038.3486881-87-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/lib/pbl.lds.S')
| -rw-r--r-- | arch/arm/lib/pbl.lds.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/lib/pbl.lds.S b/arch/arm/lib/pbl.lds.S index cafb27b2d5..ec7296f0fb 100644 --- a/arch/arm/lib/pbl.lds.S +++ b/arch/arm/lib/pbl.lds.S @@ -3,8 +3,27 @@ #include <linux/sizes.h> #include <asm/barebox.lds.h> +#include <asm/memory.h> #include <asm-generic/memory_layout.h> #include <asm-generic/pointer.h> +#include <asm/memory.h> + +/* + * The size of the PE/COFF section that covers the barebox image, which + * runs from _stext to _edata, must be a round multiple of the PE/COFF + * FileAlignment, which we set to its minimum value of 0x200. '_stext' + * itself must be 4 KB aligned, because that's what the adrp instructions + * expects, so padding out _edata to a 0x200 aligned boundary should be + * sufficient. + */ +PECOFF_FILE_ALIGNMENT = 0x200; + +#ifdef CONFIG_EFI_STUB +#define PECOFF_EDATA_PADDING \ + .pecoff_edata_padding : { BYTE(0); . = ALIGN(PECOFF_FILE_ALIGNMENT); } +#else +#define PECOFF_EDATA_PADDING +#endif #ifdef CONFIG_PBL_RELOCATABLE #define BASE 0x0 @@ -62,7 +81,9 @@ SECTIONS .barebox_imd : { BAREBOX_IMD } + . = ALIGN(PBL_SEGMENT_ALIGN); _etext = .; /* End of text and rodata section */ + _sdata = .; . = ALIGN(4); .data : { *(.data*) } @@ -109,6 +130,16 @@ SECTIONS } __pblext_end = .; + PECOFF_EDATA_PADDING + + __pecoff_data_rawsize = ABSOLUTE(. - _etext); + + /* .bss is dwarfed by piggydata size, so we just handle .bss + * as normal PE data + */ + + __pecoff_data_size = ABSOLUTE(. - _etext); + .image_end : { KEEP(*(.__image_end)) } pbl_image_size = . - BASE; |